Form for molding concrete and cement



Decv.130, 1930. E, F, HARPER 1,787,107

FORM FOR MOLDING CONCRETE AND CEMENT Dec. 30, 1930. E. F. HARPER l FORMFOR MOLDING CONCRETE AND CEMENT Filed may 17, 1928 3 Sheets-Sheet 2gnam/d@ Ef' Har/.151",

Dec. 30, 1930. E, F, HARPER `1,787,107

FORM FOR MOLDING CONCRETE AND CEMENT Filed May- 1'7, 1928 3 Sheets-Sheet5 fg /f /f /f /f /f ./f

MI5- f Ear/velz" Patented Dec. 30, 1930 UNITED STATES EDWARD n. HARPER,on PHILADELPHIA, PENNSYLVANIA FORM :FOR MODDING CONCRETE AND cnMENT'Application filed May 17,

This invention relates to a steel or other metallic form to be used inplace of lumber, in poured concrete or similar work so as to affectmaterial saving both in the cost of labor and material.

It is further aimed to provide a novel construction made up of units orsections which may be secured together by means provided thereon and incombination with battens.

10.y It is further aimed to provide a novel construction wherein asectional unit may be' used interchangeably for vertical or horizontalwork so that the sections may be built up according to the shape andsize of the proposed erection. y

More specilic objects and advantages; wiil become apparent or be pointedout in a conf sideration of the description following taken inconnection with accompanying drawings illustrating an operative form.

In said drawings Figure 1 is a view in side elevation showing a formconstructed from the units constituting the present invention, adaptedto have concrete poured therein to form an arch;

Figure 2 is a plan view of the parts of Figure 1;

Figure 3 is a fragmentary side elevation of the columns and deckelements, the latter being separated to accommodate a central column;

Figure 4 is a sectional view taken on the line 4 4 of Figure 2;

Figure 5 is a sectional view taken on the Figure 6 is a sectional viewtaken on the line 66 of Figure 1; v

Figure 7 is a sectional view taken on the line 7 7 of Figure 1; A

Figure 8 is a sectional view taken o-n the line 8 8 of Figure 1;

Figure 9 is a perspective view of one of the sections or units employedin the form;

and

Figure 10 is a perspective view of another section or unit employed inthe form.

Referring specifically to the drawings, the fomn shown is illustrativeof the fact that the different sections or parts may be 192s. serial No.278,485.

used to build up forms for `columns A and for a deck B, each beinghollow as best seen in Figure 2 and adapted to have concrete or the likepoured therein. f

In making up thefforms, a plurality of generally rectangular sectionsdesignated 10 are used. Each of these sections consists essentially of ametallic sheet 11, for instance of steel, which has a backing of wood 12suitably fastened thereto by nails, rivets, bolts or other fasteningmeans as at 13.

Cil

Each plate 11 has preferably two struck out corrugations or ribs as at14 for strengthen ing Vpurposes especially under the stresses imposedwhen pouring concrete vinto the form. L These sections or units 10 maybe of any lengthandpwidth or size desired. Along. one longitudinal sideedge, each unit 10 hasa plurality of latch members 15 pivotallyconnected thereto as at 16 and each I having a slot at17 to engagestationary latch or lkeeper members y18 which may be rigidly fastened asat 19 to the opposite longitudinalside edge portions of the units.

It will be seen as shown in Figure 9 that some of the unitsV have Vthepivoted latches 15 alongl one edge and the stationarylatch members 18along the other edge. Other units 10, asv shown4 in Figure 10, have thepivoted latches 15 along each longitudinal edge,ithose along oneedgebeing outwardly offset by means of blocks or the like 19a fastenedto the plates 11. It will thus be seen' that the unitsmay be arranged inpluralities so -as tol form the columns A or the deck B with the latches15 engaging adjacent vstationary latches 18 to hold the units againstfdisplaceme'nt.. In the case of the uppermost unit forming the deck,latches may be omitted at the upper edges.

In order to secure the units together at their ends, the reenforcingribs or corrugations 14 are cut off short of their ends to provideshoulders as at 20 which are engaged by strips or battens 21, forinstance of wood. The battens are also supported by brackets 22 fastenedto the plates 11 at the ends of the units. Such brackets have outerportions 23 which overlap the battens so that they will be held inplace.

The elements 23 have openings 24 therethrough whereby nails, spikes orthe like may be driven into the battens. It will be seen therefore thatthe battens 21 where used 5 between sections overlap the ends thereofand the junction lines therebetween.

The meeting ends of the units forming the deck B, as in'F-igure l, maybe supported or braced by a suitable structure C. arranged in contactwith the adjacent batten 2l. Y

As shown in Figure 3, the form may be as-v sembled, lea-ving a space asat D between the units forming the deckB so as to accommoy date thebuilding up of a central column in the form and its connectiontherewith.

Various changes may be resorted to provided they fall within the spiritand scope of the invention. v Y

I claim as my invention 1. A form of theclass described comprisingunits, latch means securing the units together, said units havingreenforcing members terminating short of their ends to pro videshoulders, battens for securing the sections together end to endengaging said shoulders, and brackets on the sections engaging saidbattens.

k2. A unit for forms of 'the class described comprising a plate adaptedto be secured to adjacent plates, said yirst plate having a reenforcingmember, said member terminating short of one'end of the first plate toprovide a shoulder for engagement with a batten, and bracket means onthe iirst plate to also engage such batten.

3. vA unit for'use in a form of the class describedrcomprisng a plate,latch means along longitudinal edges of the plate, brackets adjacentanend of the plate for engage- 40 ment with a batten, andreenorcingmea-ns for the plate terminating short of said end to provideshouldersto engage the batten.

4; A unit for use in a form of the class described comprising a metallicplate adapted for connection. to adjacent plates, said plate Ahaving anintegral reenforcing memberterminatingshort of both ends thereof toprovide shoulders, said shoulders being adapted to engage battens, andbrackets ad- 53 jacent one end of the plate to also engage l theadjacent battens.

-In testimonywhereof IY aiix my signature. 1 EDWARD F. HARPER

